Question

state which if the following are equations with a variable :-
1) 12=x-5
2) 2x > 7
3) x2=5
4) 5+7=3+9
5) 7=(11×5)-(12×4)​

Answer 1

Answer:

2) 2x > 7

Step-by-step explanation:

Because We don't know the value of x to say whether it greater or smaller than 7.

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Answer 2

Questions -: we have to find those equation which contains variable

First understand the meaning of variable -:

A variable is a quantity that may change within the context of a mathematical problem or experiment. Typically, we use a single letter to represent a variable. The letters x, y, and z are common generic

{ above illustration picture is attached

please refer it }

Now let's find the equations

which contains variable

$\red{ \underline{answer}}$

equation 12 = x -5 ( because it contain variable x)

equation 2x > 7 { because it contain variable x}

${x}^{2} = 5$

above equation also contain variable x

Hope this will help you

~~~~thank you .......